js.js A JavaScript JavaScript interpreter

js.js is a JavaScript interpreter (which runs in JavaScript) that allows an application to
execute a third-party script inside a completely isolated, sandboxed environment. An
application can, at runtime, create and interact with the objects, properties, and methods
available from within the sandboxed environment, giving it complete control over the
third-party script. js.js supports the full range of the JavaScript language, is compatible
with major browsers, and is resilient to attacks from malicious scripts.